https://youtu.be/-p-LzgJGGg8?t=14m31s
Some of you may not know this but Fair can be autocanceled after the 2nd hit. With higher damage on your opponent/rage, if you time this right, you have enough hitstun to get a follow up from this. Not sure when its true but this can lead to kills. Its situational but just wanted to show that Fair has uses.
I don't know if that's possible, perhaps you landing synced it?
Looking at it, you didn't instantly shield after landing though, it was a while.
2.28:58 hit mario at this stage
2.28:45 landed (roughly)
2.28.11 shield was up by this stage
Although not perfect, that's close to a third of a second, which is 20 frames, which is Meta Knight's fair landing lag. I'm not sure if that's the animation for the landing lag itself, but it did look like you moved just before shield came up though.
warionumbah2
is this a worthy radical moment?
Anyway, somewhat related kinda gifty:
Attack | DMG | ShieldStun | Fresh | Mod | Att | Diff | Hit Frame | Duration | Ending | AC Frame | Landing Lag | Full Action | Auto Cancel | Landing
Neutral Air Sweet | 10 | 4 | *+ | 1 | 0 | 0 | 6 | 2 | 43 | 43 | 16 | [-32,-33] | [-33,-34] | -12
Neutral Air Sour | 7.5 | 3 | *+ | 1 | 0 | 0 | 8 | 13 | 43 | 43 | 16 | [-20,-32] | [-21,-33] | -13
Forward Air Pre | 2.2 | 1 | | 1 | 0 | 0 | 9 | 4 | 45 | 44 | 20 | [-32,-35] | [-32,-35] | -19
Forward Air Final | 3 | 1 | | 2 | 0 | -3 | 15 | 1 | 45 | 44 | 20 | [-32,-32] | [-32,-32] | -22
Back Air Pre | 2.2 | 1 | | 1 | 0 | 0 | 7 | 8 | 51 | 40 | 18 | [-36,-43] | [-26,-33] | -17
Back Air Final | 4 | 1 | | 2 | 0 | -4 | 20 | 2 | 51 | 40 | 18 | [-33,-34] | [-23,-24] | -21
Up Air | 5 | 2 | *+ | 1 | 0 | 0 | 6 | 1 | 26 | 24 | 18 | [-18,-18] | [-17,-17] | -16
Down Air | 6 | 2 | | 1 | 0 | 0 | 4 | 1 | 27 | 26 | 22 | [-21,-21] | [-21,-21] | -20
tl;dr Auto cancelling bair, uair, dair is worthwhile, staying in the air after uair/dair is worthwhile, otherwise always landing ASAP.